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A certain test has a population mean (mu) of 285 with a population standard deviation (sigma) or 125. You take an SRS of size 400 find that the sample mean (x-bar) is 288. The s…

A certain test has a population mean (mu) of 285 with a population standard deviation (sigma) or 125. You take an SRS of size 400 find that the sample mean (x-bar) is 288. The s…
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3 votes
A certain test has a population mean (mu) of

285 with a population standard deviation
(sigma) or 125. You take an SRS of size 400
find that the sample mean (x-bar) is 288. The
sampling distribution of x-bar is approximately
Normal with mean:

asked
User Cody Harness
by
8.4k points

1 Answer

4 votes

Answer:

124

Explanation:

You'll need a calculator for this one

answered
User Normand Bedard
by
8.1k points
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